Wire-nail-making machine.



J. WIKSGHTRDM WIRE NAIL MAKING MACHINE.

APPLICATION FILED NOV. 13,1907.

1,011,545. PatentedDec.12,1911

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J. WIKSGHTRUM} WIRE NAIL MAKING MACHINE.

APPLICATION FILED NOV. 13, 1907.

2 SHEETSSHEET 2 1 ,01 1,545. I 1 Patented Dec. 12, 1911.

JAKOB WIKSCHTROM, OF DUSSELDORF, GERMANY.

WIRE-NAIIi-MAKING MACHINE.

Specification of Letters Patent.

Patented Dec. 1 2, 1911.

Application filed. November 13,1907. Serial No. 401,921.

To all whom it may concern:

Be it known that I, JAKoB WIKsoH'rRiiM, a citizen of the Kingdom ofPrussia, German Empire, and resident of Dusseldorf, Germany, whosepost-oflice address is Lindenstrasse 239, have invented certain new anduseful Improvements in Wire-Nail- Making Machines, of which thefollowing is a specification.

The subject of my invention is an improved machine for making two outwire nails or tacks simultaneously. The nails are turned out without anywaste of material and dies of eculiar shape are employed whereby botlinails are also pointed and headed all in one operation.

One form of construction of my new machine is illustrated in theaccompanying drawing.

Figure 1 is a plan of the machine, and Fig. 2 a section on the line AAof Fig. 1. Figs. 35 show details to be hereinafter referred to. Fig. 6is a side elevation of the dies in closed condition. Fig. 7 is a likeview showing the dies open. Fig. 8 is a plan of the separated dies. Fig.9 is a front elevation of the left hand die. Fig. 10 is aside elevation,and Fig. 11 a plan of the dies with inserted wire. Fig. 12 is a sideelevation, and Fig. 13 a plan of the dies closed on the wire. Fig. 14:is a plan of the closed dies with head stamps in position. Fig. 15 is aplan of the opened dies with the finished nails between them. Fig. 16 isa side elevation of the nails themselves.

In the framing of the machine there is mounted a shaft 1, on which arefast and loose pulleys and a fly wheel. Between its bearings the shaftcarries two disks 2, 3 each presenting a cam 4 on the outer side, whichcams possess stepped faces as shown laid out in Fig. 5. The inner sideof each of the disks 2, 3 presents a cam 5, 6 respectively. v

8, 8 are two levers pivoted at 7, 7 to the machine framing. The longerarms of these levers carry rollers which bear on the outer side of thedisks 2, 3 so that the levers can be oscillated by the cams 4. Theshorter arms of the levers are connected to stamps 9, guided in themachine framing, and provided with small projections 10 (Figs. 1 and 14)for a purpose to be hereinafter described.

11 are dies, carried by slides 12, 13 also mounted in the framing andmoving at right angles to the stamps 9. V

15 is an elbow lever fulcrumed at 14 and having at one end a rollerwhich bears on the cam 5, while the other end presses against the slide12. A second lever 16 is fulcrumed at 17 to the framing. The one end ofthis lever lies in the plane of the cam 6, while the other end bearsagainst the slide 13. On the shaft 1 there is also mounted a cam diskl8and pivoted to the shaft end is a rod 19. The cam 18 operates the oneend of a lever 21 fulcrumed at 20, the other end of said lever actingupon another lever 23 pivoted at 22, and which carries at one end asteel eye 24. At the level of the latter there is a stationary blade 25provided in the framing. (Figs. 1 and 3.) To the rod 19 there is jointeda bent lever 26, which is located in front of the straightening rollers27 for the wire and is furnished with a feeding device 28.

The operation of the machine is as follows :The wire fed forward betweenthe straightening and guide rollers 27 is seized by the feeder 28, andowing to the oscillating motion of the rod 19 is carried intothe-machine. After the wire has been fed forward, the part a of the cam5 (Fig. 2) comes above the lever 15 and depresses it, whereby the otherend of this lever is caused to force the slide 12 carrying the dietoward the wire and the other die. Simultaneously the part b' of the cam6 (Fig. 2) comes below the lever 16 and thus causes motion of the slide13 carrying the other die. Owing to this advance of the two dies towardeach other, the end of the wire is jammed between them. Almostsimultaneously herewith thecam 18 acts upon the lever 21. Hereby thesteel eye 24 through ,blade 25 whereby the wire is severed. As is seenfromFig. 11 the piece of wire cut off projects somewhat ateach side ofthe dies. Therise 0 of the cam 5 (Fig. 2) now comes into operation andcauses a further descent of the lever 15, and thus advances the slide 12with the die in the direction of the stamp 9. The cam 6 at cl (Fig. 2)is so shaped that the lever acting on the slide 13 can yield though thedies 11 during this retreat always remain in contact with the wire andhold it jammed between them. When the lever 16 arrives on the surface 6the rearward motion of the die which is in the slide 13 ceases. The cam5, however, has at f a further rise, whereby the slide 12 with its diewill press still more firmly against the now stationary die of the otherslide 13. Owing to the cutting edges of the dies, the piece of wireammed between the dies will be diagonally cut through and conicallypressed by means of the projecting shoulders. IIereupon the cams 4 ofthe disks 2, 3 act upon the levers 8 whereby the stamps 9 are forcedsimultaneously against the dies 11 and the wire ends projecting from thedies are formed into two nail heads. (Fig. 14:)- After the applicationof this pressure the stamps 9 slacken owing to the flatter portion ofthe cam 4 (Fig. 5), the slides 12, 13 carrying the dies separate and thefinished nails drop from the machine. In order that the nails may notremain hanging on the pressing shoulders of the dies, the edges of thestamps 9 may have small projections 10 as already stated, against whichthe head of the nails strike on separation of the dies, whereby thenails are caused more readily to drop out. Hereupon the stamps 9 returnto their initial position and the procedure is repeated.

The shape of the dies and the manner of operation will be seen fromFigs. 6-16, and their description is given hereinafter for the sake ofcompleteness though they are described and claimed in my Patent No.990,702, granted to me on April 25th, 1911. These dies are also ofsimilar construction to those described in United States Letters PatentNo. 804,786. But whereas the dies disclosed in the cited patent were oftrapezoidal cross section, the new dies are of rectangular crosssection. The new die presents a shoulder g, which on the one side isformed of two triangular surfaces h and 2', whose apices are directedtoward the same side, and by a triangular surface 70, whose apex isdirected in the opposite direction to those of the triangles h, z'. Theapices of the latter triangles lie on the edge Z, the apex of thetriangle is lies on the edge m. The second die is shaped symmetricallyto the first and lies at an angle of 180 degrees to the same, ininverted position. When the dies are advanced toward each other, theshoulders g, 9 come against each other and cut the wire and then pressthe two nails into the pyramidal recesses, which are presented owing tothe peculiar shape of the dies. Three sides of these recesses areconstituted by the triangular faces h, i and The vertical edges Z, mslide on each other and on closing of the dies the fourth side is thusformed, which, however, unlike the other three conical faces runsvertically. As will be seen from Fig. 14, when the stamps 9 come intoaction the dies 11 serve as matrices and in order that a sufficientlylarge face may be presented they are extended beyond the shoulders 9(Figs. 6 and 12).

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a wire nail making machine, thecombination with a pair of reciprocating nail pointing and cut-tingdies, of means to feed a wire between said dies, means to separate ablank from the wire fed between the dies, a pair of nail heading stampslocated at one side of the line of feed of the wire one on each side ofthe wire and adapted to move toward each other to head the blank heldbetween the dies simultaneously at both ends, means for forcing the diestogether on the feeding line to seize a blank and for moving both dieswith the blank from its line of feed laterally to posit-ion between thestamps and causing the dies to cut the blank to form the point portionsof the nails, and means for moving the stamps toward the dies to headthe nails after the point portions have been formed.

2. The combination with a pair of dies adapted to receive a blank to beheaded, of a heading punch provided with terminal projections adapted toengage the head of the headed blank when the pressure of the punch onthe dies is released and the latter are separated.

The foregoing specification signed at Dusseldorf this 26th day ofOctober, 1907.

JAKOB IVIKSCHTRCM.

In presence of- ADoLF BAYER, ALEX. SoI-IwnrTER, WILI-IELM FLAYCHE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

